Hi Guys Ill be returning to Canada in late January (my work perm extension came through). Im July AOR no PPR yet. My SIN card is expired (its expiry matched the expiry on my original work permit). My question is when igo back can i work on my old SIN even though its expired? Or do I need to go to service canada to get a new one? Lastly assuming the new one takes a couple weeks to arrive can i work in the interim while they're processing it?